28230161 has 2 divisors, whose sum is σ = 28230162. Its totient is φ = 28230160.

The previous prime is 28230151. The next prime is 28230173. The reversal of 28230161 is 16103282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19492225 + 8737936 = 4415^2 + 2956^2 .

It is a cyclic number.

It is not a de Polignac number, because 28230161 - 2²² = 24035857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28230101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14115080 + 14115081.

It is an arithmetic number, because the mean of its divisors is an integer number (14115081).

Almost surely, 2^28230161 is an apocalyptic number.

It is an amenable number.

28230161 is a deficient number, since it is larger than the sum of its proper divisors (1).

28230161 is an equidigital number, since it uses as much as digits as its factorization.

28230161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 28230161 is about 5313.2062824626. The cubic root of 28230161 is about 304.4886567658.

The spelling of 28230161 in words is "twenty-eight million, two hundred thirty thousand, one hundred sixty-one".